2006 Forester Class C
When I remove the power cord and turn off the DC switch it take about two weeks and I loose all battery power including starting battery. Something must be draining the batteries but I have no clue. ANY SUGGESTIONS

2006 Forester Class C
When I remove the power cord and turn off the DC switch it take about two weeks and I loose all battery power including starting battery. Something must be draining the batteries but I have no clue. ANY SUGGESTIONS

Assuming you use a battery disconnect and assuming those batteries are original, I believe they are at the end of their useful life. Batteries rarely last 7 years and retain capacity, reliably.

The battery that starts the vehicle was replaced about 6 weeks ago and I thought when you turned the DC switch off you turned everything off so there would be no drain on the battery

Nope the chassis battery is similar to other vehicle batteries, any drain should be tiny like a radio preset mem. Your situ is remarkable though i can leave mine for a couple months ant still starts. Anyway heres a test you can try. Lift one lead from the battery with no load on it. If it does spark beteem cable and post then remove other cable and returm to vendor. If it does spark big time then look for chassis drain

But when I turn off the DC switch shouldn't that keep the coach battery from draining and doing dead. The coach battery and the chassis battery are both going dead after about two weeks. Sorry but still confused.

Aren't motor homes a bit different than campers where a cut out switch should actually remove power to the entire camper. I would think your "front end" will still use power to maintain engine computer settings and radio presets and run the clock, right?

Also looking at this wiring diagram it seems the BCC to propane detector is always hot. It uses about 700 milliamps all the time. That will kill a fully charged battery in a few weeks.

Thank you herk7769
I think you are correct about the chassis battery, but I would think it would last a lot longer then two weeks. I wouldn't think it would have any more every day drain on it then my pick up truck and it will last a lot longer then two weeks

Thank you VinceU
Tried your test and removed the neg lead from the battery and touched it to the post and there were no sparks, tried it with the pos lead and still no sparks. The battery has been charged and will start vehicle.

Thank you herk7769
I think you are correct about the chassis battery, but I would think it would last a lot longer then two weeks. I wouldn't think it would have any more every day drain on it then my pick up truck and it will last a lot longer then two weeks